United Signal provides highly-skilled, well-trained, and safe signalmen for railroads and transit industries. Based in Madiso ... n, Wisconsin, United Signal was founded under the principles of assisting the railroad and transit markets to meet the ever growing demand for talented signalmen. To help in this challenge, United Signal has partnered with the Brotherhood of Railroad Signalmen and Signal Training Solutions. Our mission is to be the leading quality rail and transit service supplier through the creation of a corporate culture of safety, success, and respect. United Signal is a division of Madison Terminal Railway, LLC. read more